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    What is a perfect number?

    Question #66439. Asked by myjoey.

    mctavish99

    In mathematics, a perfect number is defined as an integer which is the sum of its proper positive divisors, that is, the sum of the positive divisors not including the number. Equivalently, a perfect number is a number that is half the sum of all of its positive divisors, or ó(n) = 2 n.

    Six (6) is the first perfect number, because 1, 2 and 3 are its proper positive divisors and 1 + 2 + 3 = 6. The next perfect number is 28 = 1 + 2 + 4 + 7 + 14. The next perfect numbers are 496 and 8128

    http://en.wikipedia.org/wiki/Perfect_number

    Jun 01 06, 9:16 AM
    zbeckabee

    Nice list of Perfect Numbers:

    http://ellerbruch.nmu.edu/classes/cs255f01/cs255students/tkapela/P11/All.doc

    Jun 01 06, 10:20 AM
    robboy

    A pair of Dammitheads, I'm told.
    http://www.onmilwaukee.com/music/articles/dammitheads.html%20

    Jun 01 06, 10:48 AM

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